A recreation of a railcar turned into a schoolroom, as described in Tetsuko Kuroyanagi's novel Totto-chan, the Little Girl at the Window, which you can see on display at the Chihiro Art Museum Azumino. Source.
Mokujiki (1718-1810) fulfilled a vow to carve 1000 Buddhas, travelling rural Japan and leaving distinctive smiling Buddhas wherever he went. In the early twentieth century his work was rediscovered by Soetsu Yanagi, founder of The Japan Folk Crafts Museum where some of Mokujiki's smiling Buddhas can be seen today.